package com.example.admin.myapplication;
import com.example.admin.myapplication.;
import android.app.Fragment;
import android.app.ProgressDialog;
import android.os.Bundle;
import android.os.Handler;
import android.support.annotation.Nullable;
import android.telecom.Call;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.ListView;
import android.widget.TextView;
import android.widget.Toast;

import com.example.admin.myapplication.db.City;
import com.example.admin.myapplication.db.County;
import com.example.admin.myapplication.db.Province;
import com.example.admin.myapplication.util.HttpUtil;
import com.example.admin.myapplication.util.Utility;

import org.litepal.crud.DataSupport;

import java.io.IOException;
import java.net.ResponseCache;
import java.util.ArrayList;
import java.util.List;

import javax.security.auth.callback.Callback;

import okhttp3.Response;

/**
 * Created by 淘金者 on 2017/6/5.
 */

public class ChooseAreaFragment extends Fragment {
    public static final int LEVEL_PROVINCE=0;
    public static final int LEVEL_CITY=1;
    public static final int LEVEL_COUNTY=2;
    private ProgressDialog progressDialog;
    private TextView titleText;
    private Button backButton;
    private ListView listView;
    private ArrayAdapter<String>adapter;
    private List<String>dataList=new ArrayList<>();
    private List<Province>provinceList;
    private List<City>cityList;
    private List<County>countyList;
    private Province selectedProvince;
    private City selectedCity;
    private int currentLecel;

    @Nullable
    @Override


    @Override
    public View OnCreateView(LayoutInflater inflater, ViewGroup container,
                             Bundle SavedInstanceState){
        View view=inflater.inflate(R.layout.choose_area,container,false);
        titleText=(TextView) view.findViewById(R.id.title_text);
        backButton=(Button)view.findViewById(R.id.back_button);
        listView=(ListView)view.findViewById(R.id.list_view);
        adapter=new ArrayAdapter<>(getContext(),android.R.layout.
                simple_list_item_1,dataList);
        listView.setAdapter(adapter);
        return view;
    }

    @Override
    public void onActivityCreated(Bundle savedInstanceState) {
        super.onActivityCreated(savedInstanceState);
        listView.setOnItemClickListener(new AdapterView.OnItemClickListener(){
            @Override
            public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
                if(currentLecel==LEVEL_PROVINCE){
                    selectedProvince=provinceList.get(position);
                    queryCities();
                }else if(currentLecel==LEVEL_CITY){
                    selectedCity=cityList.get(position);
                    queryCounties();
                }
            }
        });
        backButton.setOnClickListener(new View.OnClickListener(){

            @Override
            public void onClick(View view) {
                if(currentLecel==LEVEL_COUNTY){
                    queryCities();
                }else if(currentLecel==LEVEL_CITY){
                    queryProvinces();
                }
            }
        });
        queryProvinces();
    }

    private void queryProvinces() {
        titleText.setText("中国");
        backButton.setVisibility(View.GONE);
        provinceList=DataSupport.findAll(Province.class);
        if(provinceList.size()>0){
            dataList.clear();
            for(Province province:provinceList){
                dataList.add(province.getProvinceName());
            }
            adapter.notifyDataSetChanged();
            listView.setSelection(0);
            currentLecel=LEVEL_PROVINCE;
        }else {
            String address="http://guolin.tech/api/china";
            queryFromServer(address,"province");
        }
    }

    private void queryFromServer(String address, final String type) {
        showProgressDialog();
        HttpUtil.sendOKHttppRequest(address,new Callback(){
           @Override
            public void onResponse(Call call, Response response)throws IOException{
               String responseText=response.body().string();
               boolean result=false;
               if("province".equals(type)){
                   result= Utility.handleProvinceResponse(responseText);
               }else if("city".equals(type)){
                   result=Utility.handleCityResponse(responseText,selectedProvince.getId());
               }else if("county".equals(type)){
                   result=Utility.handleCountyResponse(responseText,selectedCity.getId());
               }
               if(result){
                   getActivity().runOnUiThread(new Runnable() {
                       @Override
                       public void run() {
                           closeProgressDialog();
                           if("province".equals(type)){
                               queryProvinces();
                           }else if("city".equals(type)){
                               queryCities();
                           }else if("county".equals(type)){
                               queryCounties();
                           }
                       }
                   });
               }
           }
           @Override
            public void onFailure(Call call,IOException e){
               getActivity().runOnUiThread(new Runnable() {
                   @Override
                   public void run() {
                       closeProgressDialog();
                       Toast.makeText(getContext(),"加载失败",Toast.LENGTH_SHORT).show();
                   }
               });
           }
        });
    }

    private void closeProgressDialog() {
        if(progressDialog!=null){
            progressDialog.dismiss();
        }
    }

    private void showProgressDialog() {
        if(progressDialog==null){
            progressDialog=new ProgressDialog(getActivity());
            progressDialog.setMessage("正在加载...");
            progressDialog.setCanceledOnTouchOutside(false);
        }
        progressDialog.show();
    }

    private void queryCounties() {
        titleText.setText(selectedCity.getCityName());
        backButton.setVisibility(View.VISIBLE);
        countyList=DataSupport.where("cityid=?",String.valueOf(selectedCity.getId())).find(County.class);
        if(countyList.size()>0){
            dataList.clear();
            for(County county:countyList){
                dataList.add(county.getCountyName());
            }
            adapter.notifyDataSetChanged();
            listView.setSelection(0);
            currentLecel=LEVEL_COUNTY;
        }else {
            int provinceCode=selectedProvince.getProvinceCode();
            int cityCode=selectedCity.getCityCode();
            String address="http://guolin.tech/api/china/"+provinceCode+"/"+cityCode;
            queryFromServer(address,"county");
        }
    }

    private void queryCities() {
        titleText.setText(selectedProvince.getProvinceName());
        backButton.setVisibility(View.VISIBLE);
        cityList= DataSupport.where("provinceid=?",String.valueOf(selectedProvince.getId())).find(City.class);
        if(cityList.size()>0){
            dataList.clear();
            for(City city:cityList){
                dataList.add(city.getCityName());
            }
            adapter.notifyDataSetChanged();
            listView.setSelection(0);
            currentLecel=LEVEL_CITY;
        }else {
            int provinceCode=selectedProvince.getProvinceCode();
            String address="http://guolin.tech/api/china/"+provinceCode;
            queryFromServer(address,"city");
        }
    }
}
